.layout {
    width: 100%;
    max-width: 640px;
    min-width: 320px;
    height: auto;
    background-color: #ccc;

}

.banner {
    width: 100%;
    overflow: hidden;
    position: relative;
}

.bannerImg {
    width: 1000%;
    position: relative;
    /*transition: left 0.5s ease-in-out;*/

}

.bannerImg > li {
    width: 100%;
    float: left;
}

.bannerImg > li img {
    width: 100%;
    height: 211px;
}

.bannerPoint {
    position: absolute;
    left: 50%;
    bottom: 10px;
    transform: translateX(-50%);
}

.bannerPoint li {
    width: 10px;
    height: 10px;
    float: left;
    border: 1px solid #000000;
    border-radius: 50%;
    margin: 0 3px;
}

.bannerPoint li:first-of-type {
    margin-left: 0;
}

.bannerPoint > li.active {
    background-color: black;
}